Visual pigments in dichromats.
D003118:Color Perception; D003117:Color Vision Defects; D003623:Dark Adaptation; D003720:Densitometry; D005374:Filtration; D006801:Humans; D008027:Light; D008266:Macula Lutea; D008297:Male; D010786:Photoreceptor Cells; D012168:Retinal Pigments; D013053:Spectrophotometry
D012168:Retinal Pigments